Created attachment 360100 [details] build log Looks like haxml-1.13 is a bit outdated and not compatible with current stable ghc. I suppose it's time to stabilize a 1.2x.
Yeah, the thing is really old (pre-hierarchical modules). Gets handled with bug #488750. Thanks for the report!
haxml-1.24 is stable now. Dropped old as: > 27 Jun 2014; Sergei Trofimovich <slyfox@gentoo.org> > -files/haxml-1.23-fix-build.patch, -files/haxml-1.23-haddock.patch, > -files/haxml-1.23.2-haddock.patch, -haxml-1.13.2.ebuild, -haxml-1.13.3.ebuild, > -haxml-1.23.2.ebuild, -haxml-1.23.3.ebuild, -haxml-1.23.ebuild: > Remove old, does not build against moder ghc (bug #486934 by Mike Limansky). Thanks!